An underground hole soil pressing and monitoring auxiliary tool for one-hole multi-element device

Abstract

The utility model discloses a kind of underground hole earth pressure monitoring and burying auxiliary tools of one-hole multi-element device, including reinforcing ladder and geotextile, reinforcing ladder is provided with horizontal muscle at intervals, and pressure cell and pore pressure gauge are arranged at the length direction interval of reinforcing ladder, pressure cell and pore pressure gauge are arranged at intervals, and multiple geotextile is wound around the surface of pore pressure gauge and pressure cell, sand layer is filled between adjacent geotextile layers, pore pressure gauge and pressure cell are connected with monitor by data line, and data line surface is connected with reinforcing ladder by winding film and bandage.The utility model discloses a kind of underground hole earth pressure monitoring and burying auxiliary tools of one-hole multi-element device, can bury multiple components in one hole, can greatly reduce the cost of drilling component burying, construction is quick and efficient, shortens construction period, component burying protection effect is good, conducive to the quick layout of monitoring component, and application prospect is good.

Description

Technical Field

[0001] This utility model relates to the field of engineering monitoring technology, and more specifically, to an auxiliary tool for underground pore pressure and soil pressure monitoring with a single multi-element device. Background Technology

[0002] In engineering projects, it is often necessary to install earth pressure cells and pore pressure gauges for related monitoring. The installation depth and direction of the earth pressure cells need to be controlled according to the design. For pore water pressure monitoring, it is also necessary to use fine sand to fill the area where the element is installed and clay to fill other areas, otherwise the accuracy of the data will be affected. The installation of monitoring elements usually involves drilling holes with a drilling rig and then using a drill rod to assist in the installation, in order to control the installation depth and direction of the earth pressure cells. Generally, one element is installed per hole, which leads to high drilling costs, a large deployment area, and some misalignment between earth pressure and pore pressure monitoring data.

[0003] Therefore, it is necessary to design a method that can deploy multiple monitoring components in a single hole and control the burial direction and depth to improve construction convenience. Utility Model Content

[0004] This invention provides an auxiliary tool for burying underground pore pressure and soil pressure monitoring components using a single-hole, multi-component device, to solve the problem of misalignment in soil pressure and pore pressure monitoring data caused by deficiencies in existing monitoring component burial technologies.

[0005] According to one aspect of the present invention, an auxiliary tool for underground pore pressure and soil pressure monitoring with multiple devices in a single pore is provided, including a steel ladder and geotextile. The steel ladder is provided with horizontal bars at intervals, and pressure boxes and pore pressure gauges are provided at intervals along the length of the steel ladder. The pressure boxes and pore pressure gauges are spaced apart. Multiple layers of geotextile are wrapped around the surface of the pore pressure gauges and pressure boxes. Sand layers are filled between adjacent geotextile layers. The pore pressure gauges and pressure boxes are connected to an external monitor via a data cable, and the surface of the data cable is connected to the steel ladder via a wrapping film and a binding strap.

[0006] Based on the above scheme, the bottom of the steel reinforcement ladder is provided with a conical tip, which is conical, frustum-shaped or cross-shaped.

[0007] Based on the above scheme, the preferred option is that the steel reinforcement ladder is made of welded or tied steel reinforcement.

[0008] In a preferred embodiment based on the above scheme, a protective sleeve is also included, wherein the surface of the protective sleeve is uniformly provided with permeation holes, and the protective sleeve is fitted onto the surface of the steel reinforcement ladder.

[0009] Based on the above scheme, a preferred embodiment is provided where the protective sleeve and the steel reinforcement ladder are spaced apart, and a sandbag filled with fine sand is placed between the protective sleeve and the steel reinforcement ladder.

[0010] This utility model discloses an auxiliary tool for burying multiple components in a single borehole for underground borehole pressure and soil pressure monitoring. It can bury multiple components in a single borehole, which can greatly reduce the cost of drilling and burying components. The construction is quick and efficient, shortens the construction period, and provides good protection for the buried components. It is conducive to the rapid deployment of monitoring components and has good prospects for promotion and application. Attached Figure Description

[0011] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In the drawings:

[0012] Figure 1 This is a schematic diagram of the underground pore pressure and soil pressure monitoring auxiliary tool of this utility model.

[0013] Figure 2 This is a schematic diagram of the underground pore pressure and soil pressure monitoring auxiliary tool after the protective sleeve is installed according to this utility model;

[0014] Figure 3 This is a three-dimensional schematic diagram of the protective sleeve and sandbag of this utility model;

[0015] Explanation of icon numbers:

[0016] 10. Reinforcing steel ladder; 11. Horizontal reinforcement; 12. Geotextile; 20. Pressure box; 30. Pore pressure gauge; 41. Sand layer; 42. Stretch film; 43. Binding strap; 50. Permeability hole; 51. Protective sleeve; 52. Sandbag; 60. Data cable. Detailed Implementation

[0017] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0018] It should be understood that, when used in this specification and the appended claims, the term "comprising" indicates the presence of a descriptive feature, integral, step, operation, element, and / or component, but does not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or sets.

[0019] To keep the drawings concise, only the parts relevant to this invention are shown schematically in each figure, and they do not represent the actual structure of the product. Furthermore, for ease of understanding, in some figures, only one of the components with the same structure or function is schematically depicted, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one."

[0020] It should also be further understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0021] In the embodiments shown in the accompanying drawings, the directional indications (such as up, down, left, right, front, and back) used to explain the structure and movement of the various components of this invention are relative rather than absolute. These descriptions are appropriate when these components are in the positions shown in the drawings. If the descriptions of the positions of these components change, these directional indications also change accordingly.

[0022] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the specific implementation methods of this utility model will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.

[0024] Please see Figure 1 and combined Figure 2 and Figure 3 As shown, this utility model discloses an auxiliary tool for underground pore pressure and soil pressure monitoring using a single-hole multi-element device, comprising a steel ladder 10 and geotextile 12. The steel ladder 10 is provided with horizontal bars 11 at intervals to increase the pressure points. Pressure boxes 20 and pore pressure gauges 30 are provided at intervals along the length of the steel ladder 10. The pressure boxes 20 and pore pressure gauges 30 are arranged alternately. Multiple layers of geotextile 12 are wrapped around the surface of the pore pressure gauges 30 and pressure boxes 20. Sand layers 41 are filled between adjacent layers of geotextile 12. The pore pressure gauges 30 and pressure boxes 20 are connected to an external monitor via a data cable 60, and the surface of the data cable 60 is connected to the steel ladder 10 via a wrapping film 42 and a binding strap 43.

[0025] Specifically, this utility model uses small-diameter steel bars welded into a steel ladder 10. The steel bars have a small diameter, are flexible and bendable, making it easy to lower the steel ladder 10 when buried at great depths.

[0026] The spacing of the longitudinal bars of the steel ladder 10 is generally controlled between the borehole diameter and the earth pressure box 20 diameter. The length of the steel ladder 10 is determined according to the depth of the components to be embedded.

[0027] This utility model arranges a horizontal rib 11 every 1m or 0.5m on the steel reinforcement ladder 10, which is beneficial for fixing components such as the earth pressure box 20 and preventing them from sliding. It is also convenient to determine the embedment depth when binding components on site, and can control the torsional deformation of the steel reinforcement ladder 10 and control the direction of the earth pressure box 20.

[0028] The form of the steel reinforcement ladder 10 is not limited to the shape shown in the attached figure. It can adopt various styles such as beveled angles and densification at the component locations. The steel reinforcement ladder 10 is also not limited to a planar form. The longitudinal reinforcement can be set with 3, 4 or more bars to form a steel cage.

[0029] To facilitate placement, the bottom of the steel reinforcement ladder 10 of this utility model is provided with a tip. The tip is a cone-shaped, frustum-shaped, or cross-shaped pile tip, slightly narrowed to be smaller than the borehole diameter. Multiple layers of wrapping film 42 are wrapped around the steel reinforcement ladder 10 at the depth where the earth pressure box 20 needs to be placed. The earth pressure box 20 is placed on it, and then multiple layers of wrapping film 42 are wrapped around it again. This allows for quick and convenient fixation of the earth pressure box 20 on the steel reinforcement ladder 10, and precise control of the burial depth of the monitoring components.

[0030] The earth pressure cell 20 and the pore pressure gauge are wrapped with more than 12 layers of geotextile fabric. Fine sand is filled in the outer layer to ensure that the probe is in the sand layer 41, which prevents it from being blocked by soil particles and thus failing, and also prevents it from being damaged by stones in the borehole. The wrapping volume is small and does not affect the subsequent backfilling of sand in the monitoring borehole.

[0031] Data transmission lines of multiple monitoring components are tied along the inside of the steel ladder 10. Tape, wrapping film 42, or binding straps can be used, which is convenient and quick, and protects the measuring lines from being worn by sand and gravel in the hole when the steel ladder 10 with the components tied is lowered.

[0032] When lowering the steel reinforcement ladder 10, according to the horizontal direction that needs to be monitored for soil pressure, the steel reinforcement ladder 10 is lowered into the borehole in the corresponding direction. With the help of the gravity of the steel reinforcement ladder 10, it can be lowered quickly. At the same time, the rigidity of the steel reinforcement ladder 10 can ensure that the direction of the monitoring components remains unchanged according to the preset direction.

[0033] Furthermore, this utility model also includes a protective sleeve 51. The surface of the protective sleeve 51 is evenly distributed with permeation holes 50. The protective sleeve 51 is fitted onto the surface of the steel reinforcement ladder 10 to prevent the pressure box 20 and the pore pressure gauge 30 from being damaged during the process below. Specifically, the protective sleeve 51 is spaced apart from the steel reinforcement ladder 10, and a sandbag 52 filled with fine sand is placed between the protective sleeve 51 and the steel reinforcement ladder 10. The cross-section of the sandbag 52 is annular and it is fitted onto the surface of the steel reinforcement ladder 10.

[0034] Finally, the method described in this application is merely a preferred embodiment and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. An auxiliary tool for underground pore pressure and earth pressure monitoring using a single-hole multi-element device, characterized in that, The device includes a steel reinforcement ladder and geotextile. The steel reinforcement ladder is provided with horizontal bars at intervals, and pressure boxes and pore pressure gauges are provided at intervals along the length of the steel reinforcement ladder. The pressure boxes and pore pressure gauges are provided at intervals. Multiple layers of geotextile are wrapped around the surface of the pore pressure gauges and pressure boxes. Sand layers are filled between adjacent geotextile layers. The pore pressure gauges and pressure boxes are connected to an external monitor via a data cable, and the surface of the data cable is connected to the steel reinforcement ladder via a wrapping film and binding tape.

2. The underground pore pressure and earth pressure monitoring auxiliary tool for a single-hole multi-element device as described in claim 1, characterized in that, The bottom of the steel reinforcement ladder is provided with a tip, which is conical, frustum-shaped, or cross-shaped.

3. The underground pore pressure and earth pressure monitoring auxiliary tool for a single-hole multi-element device as described in claim 1, characterized in that, The steel ladder is made of welded or tied steel bars.

4. The underground pore pressure and earth pressure monitoring auxiliary tool for a single-hole multi-element device as described in claim 1, characterized in that, It also includes a protective sleeve, the surface of which is evenly distributed with permeable holes, and the protective sleeve is fitted onto the surface of the steel ladder.

5. The underground pore pressure and earth pressure monitoring auxiliary tool for a single-hole multi-element device as described in claim 4, characterized in that, The protective sleeve is spaced apart from the steel reinforcement ladder, and a sandbag filled with fine sand is placed between the protective sleeve and the steel reinforcement ladder.

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